Ingredients for - Creamy Butternut Squash Casserole

1. Olive oil 2 tablespoons
2. Onions, chopped 2 small
3. Butternut squash - peeled, seeded, and cubed 1 (2 1/2 pound)
4. Garlic, crushed 6 cloves
5. Salt ¼ teaspoon
6. Water, or as needed (Optional) 1 tablespoon
7. Eggs 3
8. Sour cream ¾ cup
9. Grated Parmesan cheese 1 cup
10. Chopped fresh basil ⅓ cup
11. Ground black pepper ¼ teaspoon
12. Coarsely shredded mozzarella cheese ½ (8 ounce) package

How to cook deliciously - Creamy Butternut Squash Casserole

1 . Stage

Preheat oven to 425 degrees F (220 degrees C). Grease a 9x13-inch casserole dish.

2 . Stage

Heat olive oil in a skillet over medium heat; cook and stir onions in the hot oil until softened, about 10 minutes. Stir in squash and garlic; season with salt. Cook squash mixture, stirring occasionally, until squash is slightly tender, about 10 minutes. Add water if mixture gets too dry. Transfer squash mixture to the prepared casserole dish.

3 . Stage

Lightly whisk eggs in a bowl; stir in sour cream, Parmesan cheese, basil, and black pepper. Pour egg mixture over squash mixture; top with mozzarella cheese.

4 . Stage

Bake in the preheated oven until squash is tender and mozzarella cheese is bubbling, about 30 minutes.